Steward, A. N. (1960). Aquatic plants of the Pacific Northwest: With vegetative keys. Oregon State College.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSteward, Albert Newton. Aquatic Plants of the Pacific Northwest: With Vegetative Keys. Corvallis: Oregon State College, 1960.
एमएलए (8वां संस्करण) प्रशस्ति पत्रSteward, Albert Newton. Aquatic Plants of the Pacific Northwest: With Vegetative Keys. Oregon State College, 1960.
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